describeThe design concept of this product is to imitate the dorsal fins of natural fish (including sharks), as fish have the function of dorsal fins, which can reduce water resistance and also facilitate adjustment of swimming posture.The shark fin installed on the roof is a product designed to combine the functions of fish dorsal fins with modern aerodynamics. When a car is moving at high speed in the air, it will drag out a long vortex. When this vortex detaches from the rear of the car, it will generate preure difference resistance. Adding a spoiler in a suitable position can force the airflow to shift in advance from laminar flow to turbulent flow, reducing friction resistance and preure difference resistance, thereby reducing the wind resistance coefficient. At the same time, it can also release static electricity, effectively reducing dust, dirt, noise, etc. attached to the car body, and also provide a certain downward preure to stabilize the car body!characteristicEasy to install, no traces left, long-lasting and durable. Increase downforce and reduce drag, improve fuel economy, improve speed and performance. It has a bright black finish, but can be painted according to your car.specificationsMaterial: ABSCategory: Automotive AcceoriesColor: BlackStyle: minimalistSize: 8 * 4cmApplicable: Universal suitable for most vehiclesPackage includes: 1 * roof modification fish fin acceories